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MECHANICAL MUSICAL INSTRUMENT. '1 No. 371,449. Patented 001. 11, 1887.

Witnesses, 1 Inventor,

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2 Sheets-Sheet 2. H. P. HAMBRUOH.

MECHANICAL MUSICAL INSTRUMENT. No. 371,449.

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UNITED STATES PATENT ()FFICEQ HEINRICH FRIEDRICH HAMBRUOH, OF HAMBURG,GERMANY.

MECHANICAL-MUSICAL INSTRUMENT.

.BPECIFICATION forming part of Letters Patent No. 371,449, datcd October11, 1387.

Application filed Julylfi, 1887. Serial No. 214,986. (X6 model.)Patented in France October 23, 1885, No. 171,830; in England January11,1886, No. 4-28, and in Germany June 16, 1586, No. 39,816.

To all whom, it may concern:

Be it known that I, HEINRICH FRIEDRICH HAMBRUOH, a subject ofthe GermanEmperor, and a resident of Hamburgin the German Etnpire, have inventedcertain new and useful Improvements in Mechanical Musical Instruments,(for which I have secured Letters Patent in Germany, No. 38,816, datedJune 16, 1886; in France by addition. filed June 25, 1886, to LettersPatent No. 171,830, dated October 23, 1885, and in Great Britain, No.428, ofJanuary 11, 1886.) of which the following is a specification.

My invention relates to that class of musical instruments in which tunesare played mechanically by means of metal tongs; and the object of myimprovements is to produce such tunes by means of changeable sheets ofcardboard, metal, or other suitable material,pr0- vided withperforations arranged according to the tune to be played. I attain thisobject by the mechanism illustrated in the accompanying drawings, inwhich Figure l is a vertical cross section of the apparatus. Fig. 2is aplan thereof. Fig. 3 is a front view. Figs. 4 and 5 show the workingparts in two successive positions.

Similarletters refer to similar parts th roughout the several views.

According to the number of tongs of the steel comb employed in amusic-box there is arranged above a transporting roller, 1), a series oflevers, c c, which are allowed to oscillate around apivot-pin, 11 Theoscillation of such levers is caused by means of perforations a, whichare made in a sheet of metal, card board, or other suitable material,and wherein the noses x of the levers c 0' drop by the influence ofsprings d, arranged above the arms 0 of the said levers. Each lever c chas a slit, 3/,thr0ugh which passes the pivot'pin y, Fig. 1.

\Vhcn the nose x,by the action of the spring d, drops into a perforationof the sheet a. the side of slit y nearest to the lever arm 0 will stilltouch the pin y, and the arm 0' will pass from below the tong 6 withoutcoming in contact therewith, Fig. 4. As soon as the body of sheeta isgoing to raise the nose :r,the arm 0 will touch the tong c and press itdown until the lever c c has been moved by action ofthe spring (I somuch that the end of the slit y nearest to the arm 0 will bear againstthe pivot-pin y. The arm 0 then slips off from the tong c,cansing avibration,and therefore a sounding of the latter. Thus each lever c 0'makes a double motion by the influence of the perforated sheet, anoscillating one and a sliding one. The oscillating motion serves tocause the touching of the steel tong 6 when the arm 0 descends, and thesliding motion prevents such touching when the arm 0 swings up w ardHaving now particularly described and as certaincd the nature of my saidinvention and in what manner the same is to be per-.

formed, I declare that what I claim is In n'iechanical musicalinstruments,the combination of a changeable sheet of metal, cardboard,or other suitable material, provided with perforations arranged inconformity with the melody to be played, and a roller or other suitablemeans to cause a regular progress of the sheet with the lever c 0,provided with a slit, 3 and oscillating as well as sliding upon thepivot-pin '1 substantially as described,and illustrated in theaccompanying drawings.

1 In testimony that I claim the foregoing as my invention I have signedmy name, in pres ence of two witnesses, this 30th day of April, 1887.

HEINRICH FRIEDRICH HAMBRUCH.

Vitnesses:

DIEDRIOH PETERSEN, ALEXANDER SrEcHT.

